Android MediaPlayer start called in State 1. Error -38,0

Question

Good day! As usual - I am starting to learn Android programming and have faced unexpected difficulty while trying to create basic MediaPlayer app. Audio file is stored in res/raw. It is accessed with create(). I have read a few manuals on how to build a media player app and was convinced that using prepare() and prepareAsync() was not necessary in case if file is stored in res/raw folder. So here is my initial code

private MediaPlayer playerM = new MediaPlayer();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button playButton = (Button) findViewById(R.id.playButton);
    playButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            playMusic(R.raw.sleep_away);
        }
    });
    Button stopButton = (Button) findViewById(R.id.pauseButton);
    stopButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            stopMusic();
        }
    });
}

private void playMusic(int rid) {
    playerM.create(this, rid);
    playerM.start();
}

private void stopMusic() {
    playerM.stop();
}

}

Since that I have made numerous changes, but nothing helped. According to dev.android manual on MediaPlayer the code above should work. However it results in the following errors: E/MediaPlayer: start called in state 1, mPlayer(0x0) E/MediaPlayer: error (-38, 0) E/MediaPlayer: Error (-38,0)

Probably I am just making some blunt mistake. Any help would be much appreciated.

yes, you are right. But some answers with same problem as your one say that you need to call prepare. Give it a try. — Vladyslav Matviienko, Jan 26 '17 at 09:42
well, you could also try another approach not using `MediaPlayer.create()`, but initializing it with a dataSource — Vladyslav Matviienko, Jan 26 '17 at 09:47
`try{ Uri myUri = Uri.parse("android.resource://" + v.getContext().getPackageName() + "/" + R.raw.sleep_away); System.out.println(myUri); playerM.setDataSource(v.getContext(), myUri); playerM.prepare(); playerM.start(); }catch(IOException e){ e.printStackTrace(); }` Have tried it. It doesnt born any errors, but doesnt play anything also — Leezard, Jan 26 '17 at 09:50

score 2 · Accepted Answer · answered Jan 26 '17 at 10:20

Solved by myself

playButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            try{

                Uri myUri = Uri.parse("android.resource://" + v.getContext().getPackageName() + "/" + R.raw.sleep_away);
                System.out.println(myUri);
                playerM.setDataSource(v.getContext(), myUri);
                playerM.prepare();
                playerM.setOnPreparedListener(new MediaPlayer.OnPreparedListener(){
                    @Override
                    public void onPrepared(MediaPlayer playerM){
                        playerM.start();
                    }
                });
            }catch(IOException e){
                e.printStackTrace();
            }


        }
    });

I know I should add other methods to change State, but the main purpose was to get it to play file.

Nothing worked like this for me so i initilize 2 media players and before finishing first media player started second media player(in handler) and paused first media player and seeked to 0ms. — Aklesh Singh, Apr 22 '20 at 05:44
It's best not to construct string paths yourself. See this answer to set `myUri` better: https://stackoverflow.com/a/57719958/3422470 — James, Sep 28 '21 at 18:02

Android MediaPlayer start called in State 1. Error -38,0

1 Answers1